﻿<p>A tendon is a steel element such as a wire, cable, bar, rod, or strand used to impart prestress to concrete when the element is tensioned.</p>
<blockquote class="extDef">NOTE&nbsp; Definition according to ISO 6707-1: steel bar(s) or groups of bars, strands or wires given a tensile stress that produces a compressive stress in prestressed concrete or masonry. </blockquote>

<blockquote class="history">
HISTORY&nbsp; New entity in IFC2x2.
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<blockquote class="change-ifc2x4">
IFC4 CHANGE&nbsp; Attribute <em>PredefinedType</em> made optional. <em>NominalDiameter</em> and <em>CrossSectionArea</em> made optional and deprecated; this information can now be provided by <em>IfcTendonType</em>.  Description of <em>FrictionCoefficient</em> corrected.
</blockquote>

